package com.leilei.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.leilei.reggie.common.BaseContext;
import com.leilei.reggie.common.CustomException;
import com.leilei.reggie.entity.*;
import com.leilei.reggie.mapper.OrderMapper;
import com.leilei.reggie.service.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.jws.Oneway;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {


    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;

    
    
    @Autowired
    private OrderService orderService;


    /**
     * 用户下单
     * @param orders
     */
    @Override
    @Transactional
    public void submit(Orders orders) {

        //获得当前用户id
        Long userId = BaseContext.getCurrentId();

        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();

        queryWrapper.eq(ShoppingCart::getUserId,userId);

        List<ShoppingCart> shoppingCarts = shoppingCartService.list(queryWrapper);

        if (shoppingCarts == null || shoppingCarts.size() ==0){
            throw new CustomException("购物车为空");
        }

        //查询用户数据
        User user = userService.getById(userId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();

        AddressBook addressBook = addressBookService.getById(addressBookId);

        if (addressBook == null){
            throw new CustomException("用户地址信息有误，不能下单");
        }

        long orderId = IdWorker.getId();     //订单号

        AtomicInteger amount = new AtomicInteger(0);

        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item)->{

            OrderDetail orderDetail = new OrderDetail();

            orderDetail.setOrderId(orderId);

            orderDetail.setNumber(item.getNumber());

            orderDetail.setDishFlavor(item.getDishFlavor());

            orderDetail.setDishId(item.getDishId());

            orderDetail.setSetmealId(item.getSetmealId());

            orderDetail.setName(item.getName());

            orderDetail.setImage(item.getImage());

            orderDetail.setAmount(item.getAmount());

            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());

            return orderDetail;

        }).collect(Collectors.toList());

        orders.setId(orderId);

        orders.setOrderTime(LocalDateTime.now());

        orders.setCheckoutTime(LocalDateTime.now());

        orders.setStatus(2);

        orders.setAmount(new BigDecimal(amount.get()));//总金额

        orders.setUserId(userId);

        orders.setNumber(String.valueOf(orderId));

        orders.setUserName(user.getName());

        orders.setConsignee(addressBook.getConsignee());

        orders.setPhone(addressBook.getPhone());

        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));


        //向订单表插入数据，一条数据
        this.save(orders);

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        //清空购物车数据
        shoppingCartService.remove(queryWrapper);

    }




}
